Demonstration In Geometry
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Práticas argumentativas no estudo da geometria por acadêmicos de Licenciatura em Matemática
This present study was developed with academics of Licenciature in Mathematics, more specifically the discipline of Euclidean geometry with the objective of researching the process of developing the argumentation both explanatory and justificatory, in solving tasks of this discipline. The development of naive argumentation for the argumentation logic; of eve
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/03/2010
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2. THE ROLE OF DIAGRAMS IN EUCLIDEAN / O PAPEL DOS DIAGRAMAS NA GEOMETRIA EUCLIDEANA
The main concern of this work is to argue for new interpretations regarding the role of the diagrams in Euclidean geometry. Taking into account recent works on the subject, the goal here is to present alternative ways to evaluate the system which is considered the first rigorous deductive system in the history of mathematics: Euclid`s Elements. In fact, the
Publicado em: 2010
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3. Sistema para a aprendizagem de demonstrações da geometria euclidiana plana : LEEG / A system for learning demonstrations in plane euclidean geometry - LEEG
O presente artigo apresenta o sistema para a aprendizagem de demonstrações da Geometria Euclidiana Plana LEEG (Learning Environment on Euclidean Geometry). Esse sistema foi formalizado e implementado sobre o protocolo de aprendizagem MOSCA (Mestre + Oráculo + Sonda + Cliente + Aprendiz), formado por cinco agentes distintos, que interagem durante o process
Publicado em: 2010
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4. A questão da argumentação e prova na matemática escolar: o caso da medida da soma dos ângulos internos de um quadrilátero qualquer
This study is placed in the context of teaching and learning of mathematical proofs and arguments by students of middle school, developed under the Project Reasoning and Proof in School Mathematics (AProvaME). The aim of the work refers to map the concepts of argumentation and proofs of adolescent students aged between 14 and 16 years of public and private s
Publicado em: 2009
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5. Construções geométricas: uma alternativa para desenvolver conhecimentos acerca da demonstração em uma formação continuada
The purpose of this study is to analyze a sequence of activities carried out with in service teachers, aiming the construction of the definition of line bisector of a segment and, from this definition, to allow them to demonstrate inherent properties of this mathematical object. Moreover, the study also aimed that the teachers were able to justify it mathema
Publicado em: 2008
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6. Conceito de área: da composição e decomposição de figuras até as fórmulas
The objective of this research is to investigate across the use of composition and decomposition of plan forms, until the demonstration of the formula, how the area concept can be showed in the significative and motivating way to the students. To do it, we direct our studies from some hypothesis: How the reconfiguration processes of polygon forms
Publicado em: 2007
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7. Argumentação e prova: explorações a partir da análise de uma coleção didática
This work is inserted the research project Argumentation and Proof in School Mathematics (AProvaME), which aims to study the teaching and learning of mathematical proofs during compulsory schooling. The main research question of this contribution to the project relates to how proof is treated in particular geometry topics in one collection of mathematics tex
Publicado em: 2007
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8. Formação de professores: conhecimentos, discursos e mudanças na prática de demonstrações
A presente pesquisa aborda as seguintes questões: Quais são os discursos e conhecimentos iniciais sobre demonstração em Matemática apresentados pelos professores participantes do projeto O raciocínio dedutivo no processo ensinoaprendizagem da Matemática nas séries finais do Ensino Fundamental? A participação desses professores no projeto refletiria
Publicado em: 2007
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9. Concepção de uma seqüência de ensino para o estudo da semelhança: do empírico ao dedutivo
The aim of this research is to investigate how the concept of similar figures can be presented in a significant and motivate way to the students attending the first grade of Brazilian high school system, so that the proof can be an integrant part of this process. We tried to answer the research questions: How is the transition from concrete geometry to space
Publicado em: 2006
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10. New nuclear magnetic resonance methods for studying slow dynamics in organic solids: applications to polymers and proteins / Novas metodologias de ressonância magnética nuclear para o estudo da dinâmica lenta em materiais orgânicos no estado sólido: aplicações em polímeros e proteínas
Solid-State Exchange NMR is an important method to characterize details of dynamic process in materials science. However, the application of these techniques to study complex materials has been limited. In this work new solid-state Exchange NMR techniques, which allows efficient analysis of molecular motions in the millisecond time scale, are presented. The
Publicado em: 2001
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11. Atomic force microscopic demonstration of DNA looping by GalR and HU.
Regulation of gene transcription in both prokaryotes and eukaryotes involves formation of various DNA-multiprotein complexes of higher order structure through communication between distant regions of DNA. The communication between distant DNA sites occurs by interaction between proteins bound to the sites by looping out the intervening DNA segments. The repr
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12. In vivo killing and degradation of Mycobacterium aurum within mouse peritoneal macrophages.
We studied the in vivo killing and degradation of Mycobacterium aurum, a nonpathogenic, acid-fast bacillus, within macrophages after inoculation into the peritoneal cavity of CD-1 mice. The degradative process could be divided in five successive steps that were characterized on ultrastructural and cytochemical grounds and the relative contributions of which